Nuclear risks rise as powers expand and modernise arsenals: SIPRI study
A new study by the Stockholm International Peace Research Institute (SIPRI) warns that the world's nine nuclear-armed states are modernizing and expanding their arsenals, reversing decades of disarmament efforts. As of January, these nations possessed over 12,000 nuclear warheads, with a significant portion held in stockpiles and nearly 2,200 on high alert.

Briefing Summary
AI-generatedA new study by the Stockholm International Peace Research Institute (SIPRI) warns that the world's nine nuclear-armed states are modernizing and expanding their arsenals, reversing decades of disarmament efforts. As of January, these nations possessed over 12,000 nuclear warheads, with a significant portion held in stockpiles and nearly 2,200 on high alert. The report highlights increasing global tensions and the growing reliance on nuclear weapons by these states, who are reportedly sidelining or abandoning their disarmament commitments. Russia and the United States hold the vast majority of these weapons. This trend is creating new risks of escalation and miscalculation.
Article analysis
Model · rule-basedKey claims
5 extractedThe nine nuclear powers possessed 12,187 nuclear warheads as of January this year.
The nuclear weapon states are sidelining, and even walking away from, their disarmament commitments.
The world’s nine nuclear-armed states are upgrading and expanding their arsenals, accelerating an arms race.
Most nuclear-armed states deployed new nuclear-armed or nuclear-capable weapon systems last year.
An estimated 2,200 warheads were kept on high alert, meaning they could be launched within minutes.